Directions

In a small nonstick skillet, melt butter. Stir in the flour, salt and pepper until smooth; gradually add milk. Bring to a boil. Cook and stir for 2 minutes or until thickened. Remove from the heat; stir in cheese until blended.

Place half of the potatoes in a 1-1/2-qt. baking dish coated with cooking spray; layer with half of the onion and cheese sauce. Repeat layers.

Cover and bake at 350° for 50 minutes. Uncover; bake 10-15 minutes longer or until bubbly and potatoes are tender.Yield: 6 servings.